<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>注册</title>
    <link rel="stylesheet" href="css/common.css">
    <link rel="stylesheet" href="css/login.css">
</head>
<body>
    <!-- 导航栏-->
    <div class="nav">
        网页聊天
    </div>
<!-- 主窗口区-->
    <div class="login-container">
        <div class="login-dialog">
            <h3>注册</h3>
            <div class="row">
                <span>用户名</span>
                <input type="text" id="username">
            </div>
            <div class="row">
                <span>密码</span>
                <input type="password" id="password">
            </div>
            <div class="row">
                <button id="submit">注册</button>
            </div>
        </div>
    </div>

    <!--引入<jquery-->
        <script src="https://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script>
    <!--实现前后端交互-->
    <script>
        let submitButton = document.querySelector('#submit');
        submitButton.onclick = function(){
            let username = document.querySelector('#username').value;
            let password = document.querySelector('#password').value;
            if(username == '' || password == ''){
                alert("用户名或者密码不能为空！");
                return;
            } 

            $.ajax({
                type:'post',
                url:'register',
                data:{
                    username:username,
                    password:password
                },
                success:function(body){
                    if(body && body.userId > 0){
                       alert('注册成功！');
                       location.assign('/login.html'); 
                    }else{
                        alert('注册失败！');
                    }
                }
            });
            
        }
    </script>
</body>
</html>